Recognizing The Plant Cell author Yang Yu

Yang Yu, co-first author of The Arabidopsis MATERNAL EFFECT EMBRYO ARREST45 Protein Modulates Maternal Auxin Biosynthesis and Controls Seed Size by Inducing AINTEGUMENTA

Current Position: PhD candidate in Prof. Xian Sheng Zhang’s lab at Shandong Agricultural University, Shangdong, China

Education: BS in College of Life Sciences, Shangdong Agricultural University, Shangdong, China; doctoral candidate at Shangdong Agricultural University

Non-scientific Interests: Watching TV; Playing badminton

Brief bio: I started my graduate study at Shangdong Agricultural University from 2017 under the supervision of Prof. Yinghua Su. My research is the mechanism of MEE45 regulating seed size. The mutation of MEE45 result in small seeds. We found that In the ovule integument, MEE45 positively regulates ANT transcription by directly binding to the ANT promoter region, and ANT in turn directly interacts with the YUC4 promoter to activate YUC4 expression. MEE45 and ANT function in the same genetic pathway to regulate the expression of YUC4 gene, thereby mediating maternal auxin biosynthesis. Auxin biosynthesized in the maternal ovule integument may generate a signal received by embryos or move directly into the embryos to affect their development, and further determines the seed size..

论文：The Arabidopsis MATERNAL EFFECT EMBRYO ARREST45 Protein Modulates Maternal Auxin Biosynthesis and Controls Seed Size by Inducing AINTEGUMENTA

姓名：于洋

目前职位：山东农业大学张宪省教授课题组博士在读

教育背景：山东农业大学生命科学学院，本科；山东农业大学博士研究生在读

兴趣爱好：看各国具有特色的电视剧；打羽毛球

科研经历简介：从2017年开始，我很幸运的在山东农业大学苏英华教授的指导下开始了我的研究生生涯，在这段时间里，我的课题是MEE45调控种子大小的机理研究。我们发现当拟南芥中MEE45突变后，就会产生比野生型更小的种子，经过实验，我们证明：在珠被中，MEE45通过直接与ANT启动子结合，正向调控ANT的转录水平，而ANT又可以直接结合在YUC4启动子上，激活YUC4的表达。MEE45和ANT在同一个遗传通路中调控YUC4基因的表达，从而介导母体生长素的生物合成。生长素在母体组织中合成，产生的相关信号被胚接收到，也可能直接进入胚中影响胚的发育，进而决定种子的大小。